In vitro antioxidant activities of Bauhinia strychnifolia extracts: Comparison with green tea extracts

Planta Medica ◽  
2014 ◽  
Vol 80 (16) ◽  
Author(s):  
A Itharat ◽  
S Sayompark ◽  
P Hansakul ◽  
B Dechayont
Keyword(s):  
Green Tea ◽  
Antioxidant Activities

scholarly journals Effects of Food Processing on In Vivo Antioxidant and Hepatoprotective Properties of Green Tea Extracts

Antioxidants ◽  
2019 ◽  
Vol 8 (12) ◽  
pp. 572 ◽  
Author(s):  
Xiao-Yu Xu ◽  
Jie Zheng ◽  
Jin-Ming Meng ◽  
Ren-You Gan ◽  
Qian-Qian Mao ◽  
...  
Keyword(s):  
Green Tea ◽  
Food Processing ◽  
Antioxidant Activities ◽  
Ultrasound Treatment ◽  
Positive Effects ◽  
In Vivo Experiments ◽  
Study Results ◽  
Negative Effect

Food processing can affect the nutrition and safety of foods. A previous study showed that tannase and ultrasound treatment could significantly increase the antioxidant activities of green tea extracts according to in vitro evaluation methods. Since the results from in vitro and in vivo experiments may be inconsistent, the in vivo antioxidant activities of the extracts were studied using a mouse model of alcohol-induced acute liver injury in this study. Results showed that all the extracts decreased the levels of aspartate transaminase and alanine aminotransferase in serum, reduced the levels of malondialdehyde and triacylglycerol in the liver, and increased the levels of catalase and glutathione in the liver, which can alleviate hepatic oxidative injury. In addition, the differences between treated and original extracts were not significant in vivo. In some cases, the food processing can have a negative effect on in vivo antioxidant activities. That is, although tannase and ultrasound treatment can significantly increase the antioxidant activities of green tea extracts in vitro, it cannot improve the in vivo antioxidant activities, which indicates that some food processing might not always have positive effects on products for human benefits.

scholarly journals Healthy drinks made from okra and green tea extract for reducing blood cholesterol

Food Research ◽  
2019 ◽  
Vol 4 (2) ◽  
pp. 468-473
Author(s):  
Melanie Cornelia ◽  
M. Anggraini
Keyword(s):  
Antioxidant Activity ◽  
Green Tea ◽  
Antioxidant Activities ◽  
Green Tea Extract ◽  
Blood Cholesterol ◽  
Activity Data ◽  
Cholesterol Levels ◽  
Tea Extract

Okra (Abelmoschus esculentus L.) seeds and green tea (Camellia sinensis) have been known have many beneficial functions for human’s health, because of the high antioxidant contents and anti-cholesterol activities that can prevent cardiovascular disease. This research is aimed to make the formulation of healthy drink from okra seed juice with the addition of green tea extract. Green tea used was selected from green tea that has the best antioxidant activity from ten samples of green tea in the market. The best antioxidant activity data was found in Jawa tea extract with IC50 85.28±0.21 µg/mL which was formulated with the extract of okra seeds, made in the ratio of 1: 4. Selected healthy drinks were tested for physical characteristics, antioxidant activities, and sensory tests, and have antioxidant activity IC50 222.16±1.38 µg/mL. Further research was to analyze the potential of drinks in reducing cholesterol in vitro and in vivo ways. In vitro, 500 ppm drinks were able to inhibit cholesterol up to 47.55±0.76% and in vivo, there was a significant decrease in cholesterol levels after drink for 21 days with cholesterol reduction to 35.50±2.37%, triglycerides decrease 19.39±3.10%, LDL decrease 34.76±2.62%, and an increase of HDL to 94.74±16.53%.

In vitro and in vivo antioxidant activities of the leaves of Chrysophyllum albidum

Planta Medica ◽  
2011 ◽  
Vol 77 (12) ◽  
Author(s):  
AH Adebayo ◽  
AO Abolaji ◽  
OO Ayepola ◽  
TB Olorunfemi ◽  
OS Taiwo
Keyword(s):  
Antioxidant Activities

N-hexane Extract and Fraction of Green Tea as Antiproliferation of MCM-B2 Breast Cancer Cells In Vitro

2020 ◽  
Vol 6 (2) ◽  
Author(s):  
Lisni Noraida Waruwu ◽  
Maria Bintang ◽  
Bambang Pontjo Priosoeryanto
Keyword(s):  
Breast Cancer ◽  
Cancer Cells ◽  
Green Tea ◽  
Cancer Cell ◽  
Breast Cancer Cells ◽  
Green Tea Extract ◽  
Hexane Fraction ◽  
Phytochemical Screening ◽  
Tea Extract

Green tea (Camellia sinensis) is one of traditional plants that have the potential as an anticancer. The sample used in this research commercial green tea extract. The purpose of this study was to test the antiproliferation activity of green tea extract on breast cancer cell MCM-B2 in vitro. Green tea extract fractionated using three solvents, ie water, ethanol 70%, and n-hexane. Extract and fraction of green tea water have value Lethality Concentration 50 (LC50) more than 1000 ppm. The fraction of ethanol 70% and n-hexane had an LC50 value of 883.48 ppm and 600.56 ppm, respectively. The results of the phytochemical screening of green tea extract are flavonoids, tannins, and saponins, while the phytochemical screening results of n-hexane fraction are flavonoids and tannins. Antiproliferation activity was tested on breast cancer cells MCM-B2 and normal cells Vero by trypan blue staining method. The highest MCM-B2 cell inhibitory activity was achieved at a concentration of 13000 ppm green tea extract and 1000 ppm of n-hexane fraction, 59% and 59%, respectively. The extract and n-hexane fraction of green tea are not toxic to normal Vero cells characterized by not inhibiting normal cell proliferation. Keywords: antiproliferative, cancer cell MCM-B2, commercial green tea, cytotoxicity

Phytochemical composition and antioxidant activity of Malus baccata (L.) Borkh. fruits

2020 ◽  
Vol 3 (1) ◽  
pp. 47
Author(s):  
Nadezhda Petkova ◽  
Manol Ognyanov ◽  
Blaga Inyutin ◽  
Petar Zhelev ◽  
Panteley Denev
Keyword(s):  
Phenolic Compounds ◽  
Antioxidant Activities ◽  
Ethanol Extract ◽  
Titratable Acidity ◽  
Total Phenolic ◽  
Total Phenolic Compounds ◽  
Frap Assay ◽  
Phytochemical Composition ◽  
Malus Baccata

Crab apple (Malus baccata (L.) Borkh.) was mainly distributed in Europe as an ornamental plant, but the nutritional properties of its edible fruits were not fully revealed. The aim of the current study was to characterize the phytochemical composition of ripen carb apple fruits and to evaluate their nutritional and antioxidant potentials. The fruits were assayed for moisture and ash content, proteins, lipids, carbohydrates, titratable acidity (TA), pH, total phenolic compounds and natural pigments. Among the analyzed carbohydrates cellulose was found in the highest content (6% dw), followed by sugars (sucrose, glucose and fructose) and 1.8 % dw uronic acids. The total chlorophylls and carotenoids contents in their fruits were 6.51 and 4.80 μg/g fw, respectively. Total monomeric anthocyanins were not detected. The highest content of total phenolic compounds (2.67 mg GAE/g fw) was found in 95 % ethanol extract from fruits, while the total flavonoids were relatively low – 0.1 mg QE/g fw. DPPH assay (17.27 mM TE/g fw) and FRAP assay (14.34 mM TE/g fw) demonstrated in vitro antioxidant activities of crabapple. Malus baccata fruits were evaluated as a rich source of dietary fibers and phenolic compounds with significant antioxidant potential that could be used in human nutrition.

Acetylcholinesterase Inhibitory Potential and Antioxidant Activities of Five Cultivars of Rosa Damascena Mill. From Isparta, Turkey

2020 ◽  
Vol 18 (4) ◽  
pp. 354-359
Author(s):  
Shirin Tarbiat ◽  
Azize Simay Türütoğlu ◽  
Merve Ekingen
Keyword(s):  
Alzheimer’S Disease ◽  
Alzheimer's Disease ◽  
Free Radical ◽  
Neurodegenerative Disorder ◽  
Antioxidant Activities ◽  
Radical Scavenging ◽  
Acetylcholinesterase Activity ◽  
Rosa Damascena ◽  
Free Radical Damage

Alzheimer's disease is a neurodegenerative disorder characterized by memory loss and impairment of language. Alzheimer's disease is strongly associated with oxidative stress and impairment in the cholinergic pathway, which results in decreased levels of acetylcholine in certain areas of the brain. Hence, inhibition of acetylcholinesterase activity has been recognized as an acceptable treatment against Alzheimer's disease. Nature provides an array of bioactive compounds, which may protect against free radical damage and inhibit acetylcholinesterase activity. This study compares the in vitro antioxidant and anticholinesterase activities of hydroalcoholic extracts of five cultivars of Rosa Damascena Mill. petals (R. damascena 'Bulgarica', R. damascena 'Faik', R. damascena 'Iranica', R. damascena 'Complex-635' and R. damascena 'Complex-637') from Isparta, Turkey. The antioxidant activities of the hydroalcoholic extracts were tested for ferric ion reduction and DPPH radical scavenging activities. The anti-acetylcholinesterase activity was also evaluated. All rose cultivars showed a high potency for scavenging free radical and inhibiting acetylcholinesterase activity. There was a significant correlation between antioxidant and acetylcholinesterase inhibitory activity. Among cultivars, Complex-635 showed the highest inhibitory effect with an IC50 value of 3.92 µg/mL. Our results suggest that all these extracts may have the potential to treat Alzheimer's disease with Complex-635 showing more promise.

Study of Antihyperglycemic, Antihyperlipidemic and Antioxidant Activities of Tannins Extracted from Warionia saharae Benth. & Coss

2019 ◽  
Vol 19 (2) ◽  
pp. 189-198 ◽  
Author(s):  
Mohammed Ajebli ◽  
Fadwa El Ouady ◽  
Mohamed Eddouks
Keyword(s):  
Antioxidant Activity ◽  
Antioxidant Activities ◽  
Histopathological Examination ◽  
Density Lipoprotein ◽  
Hdl Cholesterol ◽  
Diabetic Rats ◽  
Lipid Lowering ◽  
Glucose Levels ◽  
Soxhlet Apparatus

Background and Objective: Warionia saharae Benth & Coss, a plant belonging to Asteraceae family, is used for its anti-diabetic properties in Morocco. The objective of this study was to evaluate the effect of tannins extracted from Warionia saharae (W. saharae) on blood glucose levels and lipid profile in normal and streptozotocin(STZ)-induced diabetic rats. Methods: Tannins (TE) were extracted from W. saharae using Soxhlet apparatus and different organic solvents. Single and once daily repeated oral administration of TE (10 mg/kg) for 15 days were used to evaluate the glucose and lipid-lowering activity in normal and diabetic rats. Furthermore, glucose test tolerance, liver histopathological examination and in vitro antioxidant activity of TE were carried out in this study. Results: The results showed that TE was able to exert antihyperglycemic and lowering total cholesterol effects as well as improvement of the high-density lipoprotein (HDL)-cholesterol serum level after 15 days of treatment. Furthermore, TE improved glucose tolerance, histopathological status of liver in diabetic rats and demonstrated interesting antioxidant activity. Conclusion: In conclusion, the present investigation revealed that TE possesses potent antidiabetic and antihyperlipidemic activities as claimed in different ethnopharmacological practices.

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